Automation System
Direct Numerical Control means:

using several computers to control one large machine
complete elimination of a need for a human operator.
eliminating computers from the manufacturing process
using one computer to control several machines
None of these

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Automation System
Numerical control:

applies only to milling machines
is a method for controlling the operation of a machine by means of a set of instructions
None of these
is a method for producing an exact number of parts per hour
All of these

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